True or false: reactants and products can be elements or compounds

Sponges, Cnidarians, Flatworms, and Roundworms are all in which group of animals? A Mammals B Vertebrates C Fish D Invertebrates E Others:

Skin cells reproduce using: budding mitosis sexual reproduction

Which of these animals would be measured to have the most mass? an elephant a goldfish a dog a fox

Electrons are capable of emmiting engery in the form of light at very narrow ranges of wavelengths. these wavelengths can be measured to find the electrons? A) mass B) density C) energy level D) specific heat

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2How many molecules of H2 are produced? moleculesHow many water molecules are required? moleculesWhat is the mole ratio of Fe to H2O?

As the average kinetic energy of the particles in a gas increases, which of the following occurs? The temperature of the gas increases. The temperature of the gas decreases. The number of particles increases. The number of particles decreases.

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

0.100 mol of CaCO3 and 0.100 mol CaO are placed in an 10.0 L evacuated container and heated to 385 K. When equilibrium is reached the pressure of CO2 is 0.220 atm. 0.

What is true about the charges of transition metal ions?

A gas obeys the ideal-gas equation of state P V = N k T, where N = n NA is the number of molecules in the volume V at pressure P and temperature T and n is the number of gm-moles of the gas.